H7 support

[digitalentity]

• RCC
• IO
• TIMERS
• DMA
• ADC
• EXTI
• SPI
• I2C
• UART
• USB VCP
• USB MSC
• SDIO
• QSPI

[digitalentity]

Initial work - #5827

[anbello]

I tested master on Matek H743 Mini:

• Boot: OK
• Communication with Configurator via USB: OK
• Gyro + Acc (MPU6000): OK
• Baro: OK (after adding 'USE_BARO_DPS310' here)
• Output: KO, motors don't spin with any ESC protocol using HAKRC-35A-BLheli-32 ESC 4in1
• Receiver: KO with IBUS serial RX on UART6

[digitalentity]

That's WAI. TImers and UARTs are not implemented yet 😕

[anbello]

I haven't enough experience to implement this but I can test when needed.

[bkleiner]

I would like to help out.
How would one go about continuing the work here? Pull the code for the missing peripherals from BF and integrate?

[DzikuVx]

@bkleiner yes, that's the way to go ;) The most important next thing for H7 are PWM outputs. If you could pull that topic off it would be awesome!

[bkleiner]

@DzikuVx i have created a draft pull request to track my progress #6905

[DzikuVx]

VCP is not working after a reboot. Seems like USB clock is not initialized correctly

[DzikuVx]

VCP at boot fixed in #6912 thanks a lot @bkleiner

[DzikuVx]

Timers fixed #6905